Dampeb-begtjlatob fob steam-boilebs



UNITED sTATis PATENT* oFFIoE.

PATRICK VHITE,4 OF BROOKLYN, NEV YORK.

DAMPER-REGULATOR FOR STEAM-BOILERS.

Specification of Letters Patent No. 17,533, dated June 9, 1857.

To all whom 'tt may concern:

Be it known that I, PATRICK WHITE, of the city of Brooklyn, county ofKings, and State of New York, have invented a new and useful machinewhich I call a Steam and Fire Regulator, the use of which is to regulatethe. draft of chimneys, lues, or pipes in connection with steam boilers;and I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawing, making a part of this specification,in which- Figure l is a longitudinal elevation. Fig. 2 a transversesection all of which is more fully shown by Fig. l of the drawings.

A is the bed plate on base of the machine; B a concave plate on whichthe flexible pipe C lies; D the clamps to secure the ends of the pipe, Ea louver plate on top of pipe for the purpose of compressing orcollapsing the liexible pipe to or chamber in connection with F and Glever and weight; H fulcrum; I puppets to which the lever is attached; Ka

steam pipe to the flexible tube pipe or chamber; L metal end to pipe; Mguides; O bearings to lever and fulcrum all of which make this machine.The clamps are screwed down so as to compress the ends of the fiexibletube between the clamps and metallic plug, the clamps being concave overthe edges of the tube and the plugs convex.

The operation and' use of the machine to open and shut the damper influe or draft of chimneys by the pressure of steam in the Hexible pipetube or chamber causing a vibrating motion in combination with the leverand weight. l

What I`claim and desire to secure by Letters Patent is:

Securing the ends of the flexible tube by the clamps D D andmetallic-plugs K M, substantially as described.

PATRICK WHITE.

l/Vitnesses DAVID DAVIS, JOHN P. Norms.

